Does anyone have any decent advice on how to handle this?

Obviously if he feels that way, it's not just because of the things he is reading. He is unhappy in the relationship. If he was happy, he wouldn't feel this way. As an example, I'll tell you my situation: I joined TRP about 2 years ago, and I've been improving myself ever since. I've learned a lot of things about the true nature of women, and yet two months ago I committed to a woman that has been in my life for almost 3 years. Why? Because she has a lot of potential. I have a certain vision for our relationship, and nobody taught her much regarding how to be a woman in the context of a relationship. Her parents only taught her how to be a person, which is very different (being single and being involved with someone require two different skillsets). I introduced her to this sub, and she has been learning and applying the information religiously, so she has my commitment. The point is this: just because I read TRP, it doesn't mean I won't ever be involved with anyone beyond sex.

The best advice I can give you is to absorb everything you can from this sub (RPW), and start applying it ASAP. Obviously your husband is not getting something, you are not fulfilling some needs. It might be a good idea to elaborate on how your relationship has been rocky, but try to focus on his point of view (or at the very least try to be objective) instead of focusing on your own point of view and your own needs. When you can do that, you will be able to discover what he is missing.

If you want to save your marriage, communicate with him, tell him about this sub and your plan to become the best version of yourself in the context of your marriage. Lead him to this sub, and ask him if the types of stuff he reads here (i.e women putting in real effort in a relationship) is something that he would like to have.

Lastly, send him over to r/marriedredpill. From the sound of it (being upset about how "a woman can never provide him with the kind of love that he provides her"), he is still in the early stages of the red pill, and hasn't fully internalized it. The reality is that women simply cannot love us in the same way that we love them. The best they can do is fight their natural impulses which eventually sabotage their relationship. If he is upset about that, he still has a lot of work to do. I STRONGLY recommend you do NOT say this to him, just point him out to that sub while telling him that you are willing to work on yourself and on your relationship, so that you can both have a happy fulfilling marriage.

For any of this to work, you have to get your ego out of the way and have to stop yourself from freezing when you feel "baffled and hurt." I find that this is what a lot of women do when faced with criticism (especially from their spouse), turning themselves into the victim, which of course leads to nowhere and doesn't solve anything. It's like a stale-mate. This is one of those impulses with which you self-sabotage. I tell this to my girl all the time. You have to fight this reaction, and open your mind so you can listen if you really want to improve. The problem isn't gonna solve itself. It takes effort, and from the sound of it, your husband's point of view is that you haven't put very much effort into the marriage. You have to start now.

Good luck.